This game is not as bad as gamespot makes it out to be. Sure I was expecting it to be a little bit more than it is but it still fits the bill. I prefer play as the marine. I guess I like the challenge of not seeing through walls and having all my weapons homing. The single player campaigns for the Predator and Alien though not a breeze dont present as many hurdles as the Marine's.

The Alien's controls can at time become very disorienting and confusing. You can quite quickly loose your bearings and not know weather or not your on the floor or the ceiling. One thing that lets the Alien's contorls down is the transition (right trigger). You have the trigger to attach yourself to a wall but then instead of climbing up that wall and automatically transisting on to the ceiling you must again press the trigger which can become frustarting espscially when moving quickly or under fire from Marines.

I think the game has made a very good replication of the Alien/Predator universe and the enviroments are engaging. I'am yet to complete this game and have only done the first few levels of each campagin but from what I have seen it looks good.